Hello @emiglino, I'd like to add my welcome to Connect along with @dadcue @jeff97 and others. I was also fortunate to have a rheumatologist that worked with me on the tapering and never pushed me on a specific schedule. One of the other discussions was started by @dadcue sums it up pretty well.
-- How to Slowly and Safely Taper Off Prednisone but ... no set rules.
https://connect.mayoclinic.org/discussion/how-to-slowly-and-safely-taper-off-prednisone-but-no-set-rules/
There are quite a few discussions on tapering off prednisone if you want to scan through them - https://connect.mayoclinic.org/search/?search=tapering+off+prednisone.

One of the things that helped me and I think also has helped others is keeping a daily journal/log of your level of pain when you get up in the morning and dosage for the day. Do you keep a daily log?